WO2013086992A1 - Structure d'électrode pour un tube de mobilité ionique et tube de mobilité ionique qui comprend cette dernière - Google Patents

Structure d'électrode pour un tube de mobilité ionique et tube de mobilité ionique qui comprend cette dernière Download PDF

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Publication number
WO2013086992A1
WO2013086992A1 PCT/CN2012/086514 CN2012086514W WO2013086992A1 WO 2013086992 A1 WO2013086992 A1 WO 2013086992A1 CN 2012086514 W CN2012086514 W CN 2012086514W WO 2013086992 A1 WO2013086992 A1 WO 2013086992A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrode
ion
migration
transfer tube
electrode structure
Prior art date
Application number
PCT/CN2012/086514
Other languages
English (en)
Chinese (zh)
Inventor
贺文
李冠兴
包云肽
Original Assignee
同方威视技术股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 同方威视技术股份有限公司 filed Critical 同方威视技术股份有限公司
Priority to ES12857104T priority Critical patent/ES2854838T3/es
Priority to CA2859065A priority patent/CA2859065C/fr
Priority to US14/365,610 priority patent/US9147564B2/en
Priority to GB1412122.2A priority patent/GB2512247B/en
Priority to EP12857104.9A priority patent/EP2793249B1/fr
Publication of WO2013086992A1 publication Critical patent/WO2013086992A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J49/00—Particle spectrometers or separator tubes
    • H01J49/02—Details
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/62—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode
    • G01N27/622—Ion mobility spectrometry
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J49/00—Particle spectrometers or separator tubes
    • H01J49/02—Details
    • H01J49/06—Electron- or ion-optical arrangements
    • H01J49/062—Ion guides
    • H01J49/065—Ion guides having stacked electrodes, e.g. ring stack, plate stack
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J49/00—Particle spectrometers or separator tubes
    • H01J49/26—Mass spectrometers or separator tubes

Definitions

  • Electrode structure of ion transfer tube and ion migration tube including the same
  • the invention relates to the field of ion migration technology, and in particular to an electrode structure of an ion transfer tube and an ion transfer tube comprising the same. Background technique
  • the two core indicators of ion mobility technology are the sensitivity and resolution of the detector. The optimization of these two indicators is the main goal of the design and manufacture of ion transfer tubes.
  • the migration tube is the core of the ion mobility spectrometer and is used to generate a uniform electric field to separate ions of different mobility. As shown in Fig.
  • the conventional migrating tube utilizes a sheet electrode 1 of the same size spaced at equal intervals by the insulating portion 3, supplemented by a uniform high-voltage electric field, and controls the migration of ions in the tube. Since the ions drift in the atmospheric air in the migration tube, the uniform electric field of the conventional structure shown in Fig. 1 is an approximate model, a non-ideal uniform electric field; and for ions, it is subject to a high voltage electric field at the same time. , air resistance and other factors; uniform and equidistant high pressure, can not make ions pre-acceleration, focusing, maximum migration and so on. Thus, the sensitivity and resolution of the obtained migration spectrum are difficult to achieve optimally. Summary of the invention
  • the technical problem to be solved by the present invention is: How to provide an ion transfer tube to optimize the sensitivity and resolution of the migration spectrum of the detecting instrument having the ion transfer tube.
  • the present invention provides an electrode structure of an ion transfer tube, the structure comprising: a ring electrode, the inner edge of the ring electrode is bent to one side, so that the ring shape The cross section of the central portion of the electrode is dovetail shaped.
  • the inner edge of the annular electrode has a substantially conical shape.
  • the present invention also provides an ion transfer tube comprising the above-mentioned electrode structures arranged at intervals, wherein the inner edge of the annular electrode of the electrode structure is curved in the same direction, and the same direction is opposite to the ion migration.
  • the electrode structure is oriented in the opposite direction of ion migration according to an aspect of the invention, the decreasing interval ratio is: 1.07 : ... : 1.07:1 , wherein n is a migration tube
  • the inner edge of the annular electrode has a substantially conical shape.
  • the cross-sectional area of the space defined by the inner edge of the ring-shaped electrode gradually increases toward the ion migration direction.
  • the migration tube further includes an insulating portion disposed between the electrode structures.
  • the outer peripheral portion of the electrode structure has a concave portion on both sides, and both ends of the insulating portion are provided in the concave portion.
  • an ion transfer tube comprising spaced-apart electrode structures, the electrode structures being oriented in a reverse direction of ion migration according to an aspect of the invention, the decreasing The spacing ratio is: 1.07 : ... : 1.07:1 , where n is the number of electrode structures in the migration tube.
  • the ions in the migrated state can travel along the focused power line, and the electric field generated by the high-voltage interval between the electrodes is increased.
  • the resolution and sensitivity of the migration spectrum can be optimized at the same time.
  • Figure 1 is a schematic view showing the structure of a conventional ion transfer tube
  • FIG. 2 is a schematic view showing the structure of an electrode structure of an ion transport tube according to an embodiment of the present invention
  • FIG. 3 is a schematic cross-sectional view showing a central portion of an electrode structure of an ion transport tube according to an embodiment of the present invention
  • FIG. 4 is a schematic view showing the structure of an ion transfer tube using an embodiment of the present invention. detailed description
  • an electrode structure of an ion transfer tube includes: a ring-shaped electrode, wherein the ring-shaped electrode (the center portion is empty) has an inner edge bent toward one side, so that the ring-shaped electrode center Part of the section is dovetail shaped, as shown in Figure 3.
  • the electric field applied thereto has a focusing effect, forcing ions in the migrating state to travel along the focused power line.
  • the outer peripheral portion of the electrode structure has recesses 5 on both sides, and both ends of the insulating portion 3 are provided in the recess 5.
  • an ion transfer tube includes the electrode structure 2 shown in FIG. 2 and the insulating portion 3 between the electrode structures 2, and a ring-shaped electrode of each electrode structure.
  • the inner edges are curved in the same direction, i.e., curved in the opposite direction of ion migration, typically toward the Faraday disk in the ion mobility detecting instrument.
  • the electrode structures are also arranged at a decreasing interval toward the Faraday disk. Wherein, the decreasing interval ratio is changed from the conventional 1:1:1 to: 1.07 11 - 1 : 1.07:1 , where n is the number of electrode structures in the migration tube.
  • the high-pressure spacing between the electrodes allows the ions in the ion-migrating lumen to migrate in a uniformly accelerated state, in conjunction with the above-described electrode structure with focusing function, so that the sensitivity and resolution of the mobility spectrum when the ions reach the Faraday disk at the end Get the best.

Abstract

La présente invention se rapporte à une structure d'électrode (2) pour un tube de mobilité ionique et à un tube de mobilité ionique qui comprend la structure d'électrode (2). La structure d'électrode (2) comprend une électrode annulaire dont le bord interne est plié vers un côté, et la section transversale de la partie centrale de l'électrode annulaire a une forme de queue d'hirondelle. Lorsqu'un instrument de détection de mobilité ionique est utilisé, les ions d'état de mobilité peuvent se déplacer le long de la ligne de puissance de focalisation. Du fait que l'intervalle de tension élevée entre les électrodes augmente de manière uniformément accélérée, le champ électrique généré par la structure d'électrode peut amener l'ion dans un état de mobilité uniformément accéléré et, en même temps, la résolution et la sensibilité du spectre de mobilité peuvent également atteindre le maximum.
PCT/CN2012/086514 2011-12-16 2012-12-13 Structure d'électrode pour un tube de mobilité ionique et tube de mobilité ionique qui comprend cette dernière WO2013086992A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
ES12857104T ES2854838T3 (es) 2011-12-16 2012-12-13 Estructura de electrodo para el tubo de migración iónica y el tubo de migración iónica que tiene el mismo
CA2859065A CA2859065C (fr) 2011-12-16 2012-12-13 Structure d'electrode pour un tube de mobilite ionique et tube de mobilite ionique qui comprend cette derniere
US14/365,610 US9147564B2 (en) 2011-12-16 2012-12-13 Electrode structure for ion drift tube and ion drift tube including the structure
GB1412122.2A GB2512247B (en) 2011-12-16 2012-12-13 Ion drift detection instrument
EP12857104.9A EP2793249B1 (fr) 2011-12-16 2012-12-13 Structure d'électrode pour un tube de mobilité ionique et tube de mobilité ionique qui comprend cette dernière

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201110422560.2 2011-12-16
CN201110422560.2A CN103165394B (zh) 2011-12-16 2011-12-16 离子迁移管的电极结构及包括该结构的离子迁移管

Publications (1)

Publication Number Publication Date
WO2013086992A1 true WO2013086992A1 (fr) 2013-06-20

Family

ID=48588382

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2012/086514 WO2013086992A1 (fr) 2011-12-16 2012-12-13 Structure d'électrode pour un tube de mobilité ionique et tube de mobilité ionique qui comprend cette dernière

Country Status (8)

Country Link
US (1) US9147564B2 (fr)
EP (1) EP2793249B1 (fr)
CN (1) CN103165394B (fr)
CA (1) CA2859065C (fr)
ES (1) ES2854838T3 (fr)
GB (1) GB2512247B (fr)
HK (1) HK1183559A1 (fr)
WO (1) WO2013086992A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160189947A1 (en) * 2014-12-31 2016-06-30 Nuctech Company Limited Electrode ring for ion mobility spectrometer, ion transfer tube and ion mobility spectrometer

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100282957A1 (en) * 2009-05-11 2010-11-11 Thermo Finnigan Llc Ion Population Control in a Mass Spectrometer Having Mass-Selective Transfer Optics
WO2010136779A1 (fr) * 2009-05-29 2010-12-02 Micromass Uk Limited Guides d'ions à tunnel d'ions
CN202373552U (zh) * 2011-12-16 2012-08-08 同方威视技术股份有限公司 离子迁移管的电极结构及包括该结构的离子迁移管

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US4378499A (en) * 1981-03-31 1983-03-29 The Bendix Corporation Chemical conversion for ion mobility detectors using surface interactions
AU2001243328A1 (en) 2000-02-29 2001-09-12 The Texas A And M University System A periodic field focusing ion mobility spectrometer
GB0100862D0 (en) * 2001-01-11 2001-02-21 Scient Analysis Instr Ltd Reflactron
US7635850B2 (en) * 2006-10-11 2009-12-22 Nissin Ion Equipment Co., Ltd. Ion implanter
US7781728B2 (en) * 2007-06-15 2010-08-24 Thermo Finnigan Llc Ion transport device and modes of operation thereof
CN101471222B (zh) * 2007-12-29 2010-11-24 同方威视技术股份有限公司 用于离子迁移率谱仪的迁移管结构
CN101603943B (zh) * 2008-06-12 2012-11-21 同方威视技术股份有限公司 用于迁移率谱仪中迁移管的电极结构
CN201804839U (zh) * 2010-09-21 2011-04-20 北京普析通用仪器有限责任公司 质谱仪

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100282957A1 (en) * 2009-05-11 2010-11-11 Thermo Finnigan Llc Ion Population Control in a Mass Spectrometer Having Mass-Selective Transfer Optics
WO2010136779A1 (fr) * 2009-05-29 2010-12-02 Micromass Uk Limited Guides d'ions à tunnel d'ions
CN202373552U (zh) * 2011-12-16 2012-08-08 同方威视技术股份有限公司 离子迁移管的电极结构及包括该结构的离子迁移管

Non-Patent Citations (1)

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Title
See also references of EP2793249A4 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160189947A1 (en) * 2014-12-31 2016-06-30 Nuctech Company Limited Electrode ring for ion mobility spectrometer, ion transfer tube and ion mobility spectrometer

Also Published As

Publication number Publication date
CN103165394B (zh) 2015-12-02
US20140353494A1 (en) 2014-12-04
CA2859065A1 (fr) 2013-06-20
GB2512247A (en) 2014-09-24
US9147564B2 (en) 2015-09-29
ES2854838T3 (es) 2021-09-23
EP2793249A1 (fr) 2014-10-22
GB2512247B (en) 2018-08-29
CN103165394A (zh) 2013-06-19
GB201412122D0 (en) 2014-08-20
CA2859065C (fr) 2017-09-05
EP2793249A4 (fr) 2015-08-05
EP2793249B1 (fr) 2021-02-10
HK1183559A1 (zh) 2013-12-27

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